CT performance phantom을 이용한 cone beam형 전산화단층영상의 특성

한충완,김규태,최용석,황의환 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.37 No.3

Purpose : To evaluate the characteristics of (widely used) cone beam computed tomography (CBCT) images. Materials and Methods : Images were obtained with CT performance phantoms (The American Association of Physicists in Medicine; AAPM). CT phantom as the destination by using PSR 9000N™ dental CT system (Asahi Roentgen Ind. Co., Ltd., Japan) and i-CAT CBCT (Imaging Science International Inc., USA) that have different kinds of detectors and field of view, and compared these images with the CT number for linear attenuation, contrast resolution, and spatial resolution. Results : CT number of both PSR 9000N™ dental CT system and i-CAT CBCT did not conform to the base value of CT performance phantom. The contrast of i-CAT CBCT is higher than that of PSR 9000N™ dental CT system. Both contrasts were increased according to thickness of cross section. Spatial resolution and shapes of reappearance was possible up to 0.6 mm in PSR 9000N™ dental CT system and up to 1.0 mm in i-CAT CBCT. Low contrast resolution in region of low contrast sensitivity revealed low level at PSR 9000N™ dental CT system and i-CAT CBCT. Conclusion : CBCT images revealed higher spatial resolution, however, contrast resolution in region of low contrast sensitivity was the inferiority of image characteristics.

만성 C형 간염 환자에서 페그인터페론 알파2a와 리바비린 병합 치료중 발생한 벨마비 1예

김일환,장제혁,유충헌,최규남,고정해,김윤정,서광원,김지현,박성재,박은택,이연재,이상혁,설상영 인제대학교 2008 仁濟醫學 Vol.29 No.-

페그인터페론과 리바비린 병합요법은 만성 C형 간염의 일차 치료법이다. 저자들은 만성 C형 간염 환자에서 페그인터페론 과 리바비린 병합 요법 중에 발생한 벨마비 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. 환자는 5년 전부터 만성 C형 간염을 앓아온 48세 남자이며, PEG-IFN α-2a 135μgm 피하주사 주1회와 하루 1200㎎의 리바비린을 투여하였다. 치료시작 후 9개월째 환자는 오른쪽 안면의 근력약화를 호소하였으며 벨마비로 진단되었다. 페그인터페론과 리바비린 병합요법을 지속하면서 관찰하였다. 환자의 벨마비는 페그인터페론 치료를 중단하지 않았음에도 3개월후 증상이 회복되고 이후 벨마비 재발 없이 현재 경과관찰 중이다. 만성 C형 간염에서 페그인터페론과 리바비린 병합 요법시 벨마비의 발생 가능성을 염두에 두어야 하겠다. A Case of Bell's Palsy Associated with Combination Therapy of Pegylated Interferon Alfa-2a (PEG-IFN) and Ribavirin for Chronic Hepatitis C Virus Infection Pegylated interferon alfa(PEG-IFN α) and ribavirin therapy is the first line treatment for chronic hepatitis C. Mild complications of the therapy are common, but more serious complications are rare. We report here a case of Bell's palsy that occurred in a patient with chronic hepatitis C virus infection during combination therapy of PEG-IFN α-2a and ribavirin. The patient was 49-year-old man with chronic hepatitis C (genotype 1b) for 8 years. He had compensated liver cirrhosis with splenomegaly. Therapy with PEG-IFN α- 2a 135mcg/week and ribavirin 1200mg/day was initiated. After 9 months of the therapy, the patient showed a loss of muscular tone on the right side of his face. A diagnosis of Bell's palsy was made. The Bell's palsy resolved over 3 months despite continuation of the combination therapy.

김주영의『객주』에 나타난 음담속담

閔忠煥 부천대학 1996 論文集 Vol.17 No.-

The purpose of the study was to investigate the indecent proverbs used in a long novel 'Kaekchu' written by Ju-Young Kim in the 1970s. This article has been apprised of an excellent contemporary novel in Korea. A long novel 'Kaekchu' was influence by a novel 'Im Kkok Chong' written by Myong-Hee Hong from the 1920s and 1940s under the Japanese occupation. I compared these two novels in terms of the amount of indecent proverbs. Both works shcared same characteristics with regard to the use of affluent Korean native languages, but showed differences in the quantity of indecent proverbs. For example, 'Kaekchu' contains more indecent proverbs than 'Im Kkok Chong'. I thought that these differences may be caused from the social background differences during the time when each novel was written and also caused from the literary views of the authors as well.

버내큐러디자인에서의 패키지문화의 발견과 해석 : 전통용기물을 중심으로 Concentrated on traditional Vessel

김충한 한국패키지디자인학회 2003 상품문화디자인학연구 Vol.13 No.-

Containing vessels of today are mostly represented as the diversity of their types and the mass production on the basis of advanced technology, systematic process and thoroughgoing planning. However, there are some unique ways of production still remaining unchanged in some specific regions, which are persistently keeping old-fashioned, improvised, unplanned ways in a sort of subculture with a voluntary isolation from the domineering flow of mass production. And anyone can barely deny that bearing a wide range of utility and applicability, traditional vessels in vernacular design are still sharing codes and values of design and culture with new, modern, updated ones even under such a system-oriented structure as the ripe post-industrial society. This study, therefore, is to make sure the wide applicability of traditional vessels as packages and to draw a paradigm from their vernacular design definitely distinguished from most stereotyped ways by focusing on the package culture permeated in traditional vessels that had been manually produced before an automatized system was popularized and are still kneaded manually only by limited initiates. After a brief review on the definition and concept of vernacular design, this study develops into an empirical, simulating way of survey on selected samples of traditional vessels. The result briefly shows the general features of the traditional packages as follows: 1. Noticeably differentiated from massively recopying ways of design 2. Realizing usual ideas in habitual on spontaneous needs 3. Forming another firm axis on the opposite side of main culture and co-existing complementarily with it 4. Having strong points of swiftness and flexibility complementing the popularized systematic process 5. Working as utility storage utensils physically showing excellent ventilation and damp proof 6. Presenting potential alternatives for the eco-friendly design trend on the horizon 7. Having artistic merits and singularity cannot be expected from ready-made articles 8. Retaining so precious cultural values as showing identity of a nation and way of living The package culture reflected in vernacular designs deserves to be preserved as II" perpetual value giving life and humanity to the existing techo-oriented products and also shows the right way to a functional alternative meeting what the future designs need to equipped with.

南江댐 上流 河中島의 初期遷移에 따른 植生構造와 上壤의 性質

李忠泳,吳炅煥 경상대학교 환경보전연구소 1993 環境保全硏究所報 Vol.1 No.1

하증로의 초기천이에 따른 토양의 성질과 식생구조를 규명하기 위하여, 경남 진주시의 남강댐 상류에 위치한 하증도에서 1989년 10월부터 1991년 9월까지 토양의 이화학적 특성, 식물상, 식물군락의 구조 및 버들속의 분포 등을 조사하였다. 1. 토양의 유기물 함량은 0.79~6.22%, 총질소량은 0.1~2.4 mg g^-1, 유효인량은 7.3~39.6 ㎍ ㅎ^-1, pH는 5.24~6.79, 전기전도도는 14~210 ㎛ho cm^-1이었고 입경조성은 모래 50.0~95.0%, 미사 2.5~47.0%, 점토 1.0~6.0% 등으로서 계절적으로 조사지소에 따라 차이가 있었다. 토향깊이에 따른 유기물 함량과 총질소량은 상층부에서 높았으며 pH는 대체로 낮아졌다. 2. 하중도에서 조사된 관속식물은 38 과 94 속 129 종 20 변종 2품종으로 총151종류였다. 이중 양치식물이 2 종류 피자식물이 149 종류였고, 피자식물은 단자엽식물이 50 종류 쌍자엽식물이 99 종류였으며, 쌍자엽식물 중 목본은 17 종류였다. 3. 초본 중에서 우점종은 중요치가 26.3인 도꼬마리 (Xanthium strumarium)였고 여뀌 (Persicaria hydropiper)가 중요치 24.1로 아우점하였으며, 물억새 (Misconthus sacchariflorus), 세모고랭이 (Scirpus triqueter), 물잔디 (Pseudoraphis ukishaba)등의 순으로 중요치가 낮아졌다. 4. 초지식생의 군총분석 결과 양의 상관은 여뀌 (Persicaria hydropiper)가 8회로 가장 높고, 그 다음이 미국가막사리 (Bidens frondosa)와 도꼬마리 (Xanthium strumarium)가 각각 7회로 나타났다. 음의 상관은 세모고랭이(Scirpus triqueter)가 6회로 가장 많고, 쇠치기풀 (Hemarthria sibirica) 및 물억새 (Miscanthus sacchariflorus) 5회, 미국가막사리 (Bidens frondosa) 4회 등의 순으로 적었다. 5. 초지식생의 종다양도는 11월의 1.305부터 8월의 1.538까지 계절에 따라 차이가 있었다. 6. 본 하중도에서 조사된 12종의 버들류 (Salixspp.) 중 선버들 (Salix nipponica)이 우점종이었고 강계버들 (Salix kangensis)이 아우점하였는데, 이들 버들류는 하중도에서 초기천이의 개척식물로 추정되었다. Physico-chemical properties of soil, flora, plant community structure, and distribution of Salix spp. were investigated at the sandbar in the upper stream of the Namgang-Dam, near chinju city, Gyeongsangnam-Do, Korea from October 1989 to September 1991. 1. Ranges of the soil properties such as organic matter, total nitrogen, available phosphorus, pH, and conductivity were 0.79 ∼ 6.22%, 0.1 ∼ 2.4 ㎎ g^-1, 7.3 ∼ 39.6 ㎍ g^-1, 5.24 ∼ 6.79, and 14 ∼ 210 ㎛ho ㎝^-1, respectively. Percentages of the particle size for sand, silt, and clay were 50.0∼95.0%, 2.5∼47.0 %, and 1.0∼6.0 %, respectively. Those values were different along with seasons and stands. The values of organic matter and total nitrogen were high, and pH was low at the upper layer of the sediment. 2. The flora of the sandbar was composed of 38 families, 94 genera, 129 species, 20 varieties, and 2 forma or total 151 taxa. Among them, Pteridophyta was 2 taxa, and Angiospermae was 149 taxa including 50 taxa of Monocotyledoneae and 99 taxa of Dicotyledoneae. Dicotyledoneas was composed of 17 taxa of woody plants and 82 taxa of herbaceous plants. 3. Among herbaceous species, Xanthium strumarium was the dominant species by the importance value of 26.3, and those of Persicaria hydropiper, Miscanthus sacchariflous, and Scirpus triqueter were 24.1, 17.8, and 13.0, respectively. 4. As the result of the association analysis for the herbaceous species, the number of positive correlation for Persicaria hydropiper was highest as 8 times, and that of Bidens frondosa and Xanthium strumarium was 7 times. The number of negative correlation for Scirpus triqueter was highest as 6 times, and that of Hemarthria sibirica and Miscanthus sacchariflorus was 5 times, and Bidens frondosa was 4 times. 5. The species diversity indices for the herbaceous species were different along with the season from 1.305 of November to 1.538 of August. 6. Among 12 Salix species of the sandbar, Salix nipponica was the dominant species, and Salix kangen was subdominant. Salix species were supposed to the pioneer plants at the early stage of the sandbar succession in the investigated area.

관순법에 의한 휜-관 열교환기의 성능 해석

이태환,유충웅 진주산업대학교 1999 論文集 Vol.38 No.-

A cross-flow finned tube heat exchanger was investigated using a tube-by-tube method. The refrigerant R22 flows inside tubes while the air passes outside the finned tube. A self-constructed refrigerant circuitry was adopted. The refrigerant enthalpy at the exit of each tube and the average condensate layer thickness are investigated as a measure of the heat transfer and the observation with the quantity of condensation phenomenon respectively. The dependence of refrigerant enthalpy and the average condensate layer thickness on the refrigerant circuitry was also observed. It was confirmed that this method could be applied to the analysis of finned tube heat exchanger with condensation.

Haemophilus aphrophilus 심내막염 1예

차충환,신희봉,장성수,김민경,김양수,송재관,김미나 대한임상미샐물학회 2003 Annals of clinical microbiology Vol.6 No.2

쥐의 간에서 생산되는 Dehydroepiandrosterone Sulfotransferase의 Genomic DNA 분리

김동섭,송충석,양용,오두환 한국노화학회 1993 한국노화학회지 Vol.3 No.1

당근을 이용한 식초 및 음료수의 개발

신진한,류충호,조성환 경상대학교 농업생명과학연구원 2002 농업생명과학연구 Vol.36 No.1

당근파쇄물을 Termamyl, Dextrozyme 및 Viscozyme과 같은 당질 가수분해 효소로 가수분해시킨 당화물을 Saccharomyces cerevisiae로 발효시켜 얻어진 알코올 용액을 기질로하여 Acetobacter aceti 배양에 의하여 식초를 제조하고, 이와같은 제조한 식초를 이용하여 여러 형태의 식음료를 조제하여 관능검사를 실시하였다. 먼저, 당질가수분해효소로 당근파쇄물을 가수분해아여 환원당 농도가 0.6%이던 당근 파쇄물의 환원당 농도가 7.0%로 증가된 당근 당화물을 제조할 수 있었다. 이어서, 당근당화물에 포도당을 첨가하여 환원당 농도를 20%로 조절한 후, 알코올 발효시켜 알코올농도를 6.0%로 조절한 후, 종초(Acetobacer aceti의 전 배양액)를 가해 배지의 초기산도가 1.0% 부근이 되도록 조절하여 30℃에서 정치배양 및 진탕 배양시켰다. 진탕 배양의 경우, 발효 22일 경에 최대 산도 7.0%에 도달하였고, 정치배양의 경우에는 발효 30일 경에 최대 산도 6.8%에 도달하였다. 이와같이 조제한 당근식초를 저온살균하고 이를 이용하여 제조한 식음료로는 액상과당을 10%가량 첨가하여 제조한 음료 시제품이 당근과즙과 각종 부원료를 첨가하여 제조한 시제품보다 높은 관능 평가 결과를 얻었다. To develop vinegar and beverage products from carrots, carbohydrates in carrots were hydrolyzed with hydrolyzing enzymes such as Termamyl, Dextrozyme, and Viscozyme. The hydrolysate was used as the substrates of alcohol and acetic acid fermentation by Saccharomyces cerevisiae and Acetobacter aceti, respectively. The sensory evaluation for the prepared vinegar and vinegar-containing beverages was carried out. After hydrolyzing crushed carrots, the saccharified product could be manufactured in the 7.0% ratio of deoxidized saccharification, whose concentration was originally 0.6%. After the concentration of reducing sugars was made up to 20% by adding glucose to the saccharified product, the alcohol fermentation was done at 30℃. After alcohol fermentation, 6.0% of alcohol content was composed in the liquid medium precultivated by acetobacter aceti and the acidity in the early stage was reached around 1.0%. While it arrived at the maximum acidity of 7.0% at the 22th day of fermentation in the case of shaking cultivation, the alcohol concentration in the culture was the maximum acidity of 6.8% at the 30th day of fermentation in the case of the static cultivation. In the sensory evaluation for the various kinds of beverage prepared with the carrot vinegar, the testing beverage manufactured with adding 10% of liquid fructose to the culture showed best results.

私立大學의 外部監査制度 改善에 관한 實證硏究

김길조,박충환 中央大學校經營硏究所 2002 經營學論集 Vol.28 No.2